Histology of dental pulp healing after tooth replantation in rats.
10.5395/JKACD.2010.35.4.273
- Author:
Eun Jin GO
1
;
Han Seong JUNG
;
Eui Seong KIM
;
Il Young JUNG
;
Seung Jong LEE
Author Information
1. Department of Conservative Dentistry, College of Dentistry, Younsei University, Seoul, Korea. sjlee@yuhs.ac
- Publication Type:Original Article
- Keywords:
Tertiary dentin;
Bone;
Dental pulp healing;
Tooth replantation;
Rat
- MeSH:
Animals;
Dental Pulp;
Dentin;
Molar;
Rats;
Replantation;
Tooth;
Tooth Replantation
- From:Journal of Korean Academy of Conservative Dentistry
2010;35(4):273-284
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
The objective of this study was to observe the histology of dental pulp healing after tooth replantation in rats. The maxillary right first molars of 4-week-old rat were extracted, and then the teeth were repositioned in the original socket. At 3 days after replantation, there was localized inflammatory reaction. But, pulp revasculization and healing had already begun in the root area. At 5 days after replantation, odontoblast-like cells were observed. Tertiary dentin deposition was observed beneath the pulp-dentin border from 1 week after replantation. And tertiary dentin was increased at 2 weeks after replantation. The presence of odontoblast-like cells and the formation of tertiary dentin were continued to 4 weeks after replantation. At 4 weeks after replantation, the deposition of bone-like tissues and cementum-like tissues was observed. This results show that there is a possibility of pulp healing after tooth replantation in rats and the mineralization of tooth can progress. The mineralization of tooth after replantation was initially occurred by the deposition of tertiary dentin, but as time passed, the deposition of bone-like tissues and cementum-like tissues was begun and increased.
